West Highland Flora

Widespread but scarce, on alkaline rock at any altitude
but most frequent in the uplands.

Flower diameter c 3-5 mm.

ID: Unmistakable if the twisted fruits are visible (note
that young fruits or those on dwarf plants may not be twisted). Otherwise
told from any similar crucifers apart from D norvegica by the slightly
notched petals. Told from D norvegica by having many stem-leaves (D
norv has 0-2) and the stem-leaves having a few large forward-pointing
distant teeth (untoothed in D norv)